Maybe the problem was that the wifi dongle was too far away from my router. I utter it in another outlet and it seems to communicate better with the lock but problem remains... I can't use Google home to lock my door.

I get "This mode is unavailable for Garage door".

Funny thing is that it seems to work ok with my 1st gen Sesame lock at my other house. I cannot verify because I'm not there but if I ask Google to lock my cottage house door it says: ok I'm unlocking your cottage house door". It's weird though because I'm asking to LOCK IT and Google will answer "Ok I'm will UNLOCK your cottage door". But at least it does something and doesn't respond unavailable...

Regarding Google's response in French, is Google still locking the door when you ask it to or is it unlocking? If the latter, please check voice history to make sure Google is correctly interpreting your voice command. If the former, it sounds like it may be a bug in the French version of Google Assistant. We did not provide Google with French responses and they're automatically generated by Google, so if Google is locking Sesame when replying that it's unlocking, please contact Google Assistant support to report this bug. Thanks! - CANDY HOUSE

Unfortunately the PIN is a security requirement put in place by Google and it's unlikely they will ever change this requirement. It's so no one can yell "OK Google, unlock my door!" and be able to unlock your door and access your home without authorization. We're currently still waiting on Google to enable 2FA so we can implement unlocking for Sesame as a Google Home Control device.

However, the IFTTT applet doesn't have this restriction/protection in place, and you can unlock the door by saying "OK Google, Open Sesame" if you have the applet turned on. Hope this helps and let us know if you have any further questions! - CANDY HOUSE

After 2FA is enabled, you will need to go to the CANDY HOUSE Dashboard to set up a PIN specifically for use with Sesame on Google Home. This PIN will be required to unlock Sesame.

Glad to hear IFTTT is working as well! How long is it taking for IFTTT to respond? 6-7 seconds is normal, if it's taking longer than that for you, we recommend moving your Wi-Fi Access Point closer to Sesame if possible.